Refactor bailout reasons and disable optimization in more cases.

src/compiler.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_H_
 #define V8_COMPILER_H_
 
 #include "src/allocation.h"
 #include "src/ast.h"
+#include "src/bailout-reason.h"
 #include "src/zone.h"
 
 namespace v8 {
 namespace internal {
 
 class AstValueFactory;
 class HydrogenCodeStub;
 
 // ParseRestriction is used to restrict the set of valid statements in a
 // unit of compilation.  Restriction violations cause a syntax error.
@@ skipping 55 matching lines @@
     kSavesCallerDoubles = 1 << 8,
     kRequiresFrame = 1 << 9,
     kMustNotHaveEagerFrame = 1 << 10,
     kDeoptimizationSupport = 1 << 11,
     kDebug = 1 << 12,
     kCompilingForDebugging = 1 << 13,
     kParseRestriction = 1 << 14,
     kSerializing = 1 << 15,
     kContextSpecializing = 1 << 16,
     kInliningEnabled = 1 << 17,
-    kTypingEnabled = 1 << 18
+    kTypingEnabled = 1 << 18,
+    kDisableFutureOptimization = 1 << 19,
+    kAbortedDueToDependency = 1 << 20
   };
 
   CompilationInfo(Handle<JSFunction> closure, Zone* zone);
   CompilationInfo(Isolate* isolate, Zone* zone);
   virtual ~CompilationInfo();
 
   Isolate* isolate() const {
     return isolate_;
   }
   Zone* zone() { return zone_; }
@@ skipping 216 matching lines @@
   void RollbackDependencies();
 
   void SaveHandles() {
     SaveHandle(&closure_);
     SaveHandle(&shared_info_);
     SaveHandle(&context_);
     SaveHandle(&script_);
     SaveHandle(&unoptimized_code_);
   }
 
+  void AbortOptimization(BailoutReason reason) {
+    if (bailout_reason_ != kNoReason) bailout_reason_ = reason;
+    SetFlag(kDisableFutureOptimization);
+  }
+
+  void RetryOptimization(BailoutReason reason) {
+    if (bailout_reason_ != kNoReason) bailout_reason_ = reason;
+  }
+
   BailoutReason bailout_reason() const { return bailout_reason_; }
-  void set_bailout_reason(BailoutReason reason) { bailout_reason_ = reason; }
 
   int prologue_offset() const {
     DCHECK_NE(Code::kPrologueOffsetNotSet, prologue_offset_);
     return prologue_offset_;
   }
 
   void set_prologue_offset(int prologue_offset) {
     DCHECK_EQ(Code::kPrologueOffsetNotSet, prologue_offset_);
     prologue_offset_ = prologue_offset;
   }
@@ skipping 14 matching lines @@
   Handle<Foreign> object_wrapper() {
     if (object_wrapper_.is_null()) {
       object_wrapper_ =
           isolate()->factory()->NewForeign(reinterpret_cast<Address>(this));
     }
     return object_wrapper_;
   }
 
   void AbortDueToDependencyChange() {
     DCHECK(!OptimizingCompilerThread::IsOptimizerThread(isolate()));
-    abort_due_to_dependency_ = true;
+    SetFlag(kAbortedDueToDependency);
   }
 
-  bool HasAbortedDueToDependencyChange() {
+  bool HasAbortedDueToDependencyChange() const {
     DCHECK(!OptimizingCompilerThread::IsOptimizerThread(isolate()));
-    return abort_due_to_dependency_;
+    return GetFlag(kAbortedDueToDependency);
   }
 
   bool HasSameOsrEntry(Handle<JSFunction> function, BailoutId osr_ast_id) {
     return osr_ast_id_ == osr_ast_id && function.is_identical_to(closure_);
   }
 
   int optimization_id() const { return optimization_id_; }
 
   AstValueFactory* ast_value_factory() const { return ast_value_factory_; }
   void SetAstValueFactory(AstValueFactory* ast_value_factory,
@@ skipping 81 matching lines @@
   Handle<TypeFeedbackVector> feedback_vector_;
 
   // Compilation mode flag and whether deoptimization is allowed.
   Mode mode_;
   BailoutId osr_ast_id_;
   // The unoptimized code we patched for OSR may not be the shared code
   // afterwards, since we may need to compile it again to include deoptimization
   // data.  Keep track which code we patched.
   Handle<Code> unoptimized_code_;
 
-  // Flag whether compilation needs to be aborted due to dependency change.
-  bool abort_due_to_dependency_;
-
   // The zone from which the compilation pipeline working on this
   // CompilationInfo allocates.
   Zone* zone_;
 
   DeferredHandles* deferred_handles_;
 
   ZoneList<Handle<HeapObject> >* dependencies_[DependentCode::kGroupCount];
 
   template<typename T>
   void SaveHandle(Handle<T> *object) {
@@ skipping 103 matching lines @@
   };
 
   MUST_USE_RESULT Status CreateGraph();
   MUST_USE_RESULT Status OptimizeGraph();
   MUST_USE_RESULT Status GenerateCode();
 
   Status last_status() const { return last_status_; }
   CompilationInfo* info() const { return info_; }
   Isolate* isolate() const { return info()->isolate(); }
 
-  MUST_USE_RESULT Status AbortOptimization(
-      BailoutReason reason = kNoReason) {
-    if (reason != kNoReason) info_->set_bailout_reason(reason);
+  Status RetryOptimization(BailoutReason reason) {
+    info_->RetryOptimization(reason);
     return SetLastStatus(BAILED_OUT);
   }
 
-  MUST_USE_RESULT Status AbortAndDisableOptimization(
-      BailoutReason reason = kNoReason) {
-    if (reason != kNoReason) info_->set_bailout_reason(reason);
-    // Reference to shared function info does not change between phases.
-    AllowDeferredHandleDereference allow_handle_dereference;
-    info_->shared_info()->DisableOptimization(info_->bailout_reason());
+  Status AbortOptimization(BailoutReason reason) {
+    info_->AbortOptimization(reason);
     return SetLastStatus(BAILED_OUT);
   }
 
   void WaitForInstall() {
     DCHECK(info_->is_osr());
     awaiting_install_ = true;
   }
 
   bool IsWaitingForInstall() { return awaiting_install_; }
 
@@ skipping 124 matching lines @@
   Zone zone_;
   unsigned info_zone_start_allocation_size_;
   base::ElapsedTimer timer_;
 
   DISALLOW_COPY_AND_ASSIGN(CompilationPhase);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILER_H_